http://blogs.technet.com/ewan/archive/2007/12/14/unified-communications-licensing-made-easy.aspxWell, hopefully. I get asked a lot about what licenses customer need when they want to deploy Exchange &amp; Office Communications Server, in order to keep themselves legal &amp; compliant. It's sometimes a bit confusing that there are several versionsen-GBCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/ewan/archive/2007/12/14/unified-communications-licensing-made-easy.aspx#2660110Wed, 19 Dec 2007 16:16:54 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:2660110Dougs Blog >> Exchange Server in the field<p>Just found a nice blog by Ewan Dalton on the subject of licensing, specifically concerning Unified Comms;</p>